# Olivez

> Olivez is a collection of free online calculators, converters, file tools, text utilities, randomizers, educational tools, and practical browser-based utilities.

Use each individual tool page as the source of truth for its current features, limits, processing behavior, privacy details, compatibility, examples, formulas, and references.

Processing varies by tool. Many Olivez tools work locally in the browser, while some tools may use Olivez server endpoints, external network requests, browser device APIs, or other processing methods required by the task.

No account is required to use the current public tool collection.

## Tools

### Finance

* [APR Calculator](https://olivez.in/tool/apr-calculator): Estimate APR for a fixed-rate installment loan by including prepaid finance charges that reduce the amount financed.
* [Compound Interest Calculator](https://olivez.in/tool/compound-interest-calculator): Project compound growth from an initial investment, recurring contributions, a nominal annual rate, and daily, monthly, quarterly, or yearly compounding.
* [Credit Card Payoff Calculator](https://olivez.in/tool/credit-card-payoff): Estimate how long a credit-card balance will take to repay or calculate the monthly payment required for a target timeline.
* [EV Charging Cost vs Gas Calculator](https://olivez.in/tool/ev-charging-cost-vs-gas-calculator): Compare EV electricity and gasoline costs using real efficiency, home and public charging prices, losses, annual driving, and break-even rates.
* [Inflation Calculator](https://olivez.in/tool/inflation-calculator): Compare U.S. dollar purchasing power with annual CPI-U data or project a future amount using a custom inflation or deflation rate.
* [Investment Calculator](https://olivez.in/tool/investment-calculator): Project portfolio growth with monthly contributions, fees, inflation, contribution increases, and lower, base, and higher return scenarios.
* [Loan Calculator](https://olivez.in/tool/loan-calculator): Calculate a fixed-rate monthly loan payment, total interest, payoff date, extra-payment savings, and amortization schedule.
* [Margin Calculator](https://olivez.in/tool/margin-calculator): Calculate gross profit, gross margin, markup, cost share, or the selling price required for a target margin or markup.
* [Mortgage Calculator](https://olivez.in/tool/mortgage-calculator): Estimate fixed-rate mortgage payments, total interest, upfront cash, payoff date, extra-payment savings, and a complete amortization schedule.
* [Retirement Calculator](https://olivez.in/tool/retirement-calculator): Project savings at retirement, estimate an inflation-adjusted required balance, and test whether withdrawals last through a selected age.
* [Salary Calculator](https://olivez.in/tool/salary-calculator): Convert gross pay between hourly, daily, weekly, biweekly, semi-monthly, monthly, and annual equivalents using a custom work schedule.
* [Sales Tax Calculator](https://olivez.in/tool/sales-tax-calculator): Add tax to a price or remove included tax to recover the original price and tax amount.
* [Savings Calculator](https://olivez.in/tool/savings-calculator): Project a savings balance from an opening deposit, monthly contributions, APY or nominal interest, contribution timing, and term.

### Business

* [Google AdSense Calculator](https://olivez.in/tool/google-adsense-calculator): Estimate potential Google AdSense earnings from page views, Page RPM, CTR, and CPC.
* [Meeting Cost Calculator](https://olivez.in/tool/worthless-meeting-calculator): Estimate the direct labour cost and person-hours of one-time or recurring meetings using multiple salary groups, overhead, preparation, and follow-up.
* [Platform Payout & Fee Calculator](https://olivez.in/tool/platform-payout-estimator): Estimate platform payout, fee leakage, tax reserves, or the gross sales needed to reach a target take-home amount.

### Health

* [BMI Calculator](https://olivez.in/tool/bmi-calculator): Calculate adult BMI from height and weight, see your BMI category, and compare the reference weight range under selected thresholds.
* [Body Fat Calculator](https://olivez.in/tool/body-fat-calculator): Estimate adult body-fat percentage, fat mass, fat-free mass, FFMI, and BMI using circumference measurements or an adult BMI regression.
* [Sleep Calculator](https://olivez.in/tool/sleep-calculator): Calculate bedtime, wake-up time, hours slept, or a wake-up time from now using your sleep target and fall-asleep estimate.

### Cooking

* [Alcohol Dilution Calculator](https://olivez.in/tool/alcohol-dilution-calculator): Calculate the estimated water needed to reduce a spirit or alcohol solution to a lower target ABV.
* [Brewing ABV Calculator](https://olivez.in/tool/brewing-abv-calculator): Estimate alcohol by volume and apparent attenuation from original and final gravity readings.
* [Butter Stick Converter](https://olivez.in/tool/butter-stick-converter): Convert US butter sticks into grams, ounces, cups, tablespoons, and teaspoons for baking and recipe conversions.
* [Cake Pan Size Converter](https://olivez.in/tool/cake-pan-size-converter): Calculate how much batter you need when changing between round, square, or rectangular cake pans.
* [Coffee-to-Water Ratio Calculator](https://olivez.in/tool/coffee-water-ratio-calculator): Calculate coffee or brewing water from an editable ratio, batch size, or number of servings.
* [Donut Calculator](https://olivez.in/tool/donut-quantity-planner): Estimate donuts per guest, reserve, full boxes, box overage, and an even variety split for an event.
* [Grams to Cups Converter](https://olivez.in/tool/grams-to-cups-converter): Convert grams to US cups, tablespoons, teaspoons, and millilitres using ingredient-specific baking weights.
* [Ice Cream Mix Calculator](https://olivez.in/tool/ice-cream-mix-calculator): Calculate milk fat, MSNF, added sugar, and total solids for a simple milk, cream, sugar, and skim-milk-powder base.
* [Milliliters to Grams Calculator](https://olivez.in/tool/milliliters-to-grams-calculator): Convert milliliters to grams for flour, sugar, butter, water, oil, honey, and other common cooking ingredients.
* [Nutrition Calculator](https://olivez.in/tool/nutrition-calculator): Search USDA foods and calculate calories, macros, vitamins, and minerals for any gram weight or listed serving size.
* [Oil to Butter Converter](https://olivez.in/tool/oil-to-butter-converter): Convert vegetable oil to a practical melted-butter substitution in US cups, sticks, tablespoons, and grams.
* [Pasta Calculator](https://olivez.in/tool/pasta-calculator): Calculate how much uncooked dry or fresh pasta you need for any number of people.
* [Pizza Dough Calculator](https://olivez.in/tool/pizza-dough-calculator): Calculate flour, water, salt, yeast, and oil for any number and weight of pizza dough balls.
* [Recipe Scaling Calculator](https://olivez.in/tool/recipe-scaling-calculator): Scale an ingredient list for more or fewer servings, including fractions, mixed numbers, decimals, and ranges.
* [Sourdough Hydration Calculator](https://olivez.in/tool/sourdough-hydration-calculator): Calculate dough hydration while correctly including the flour and water inside your starter or levain.
* [Unit Price Calculator](https://olivez.in/tool/unit-price-calculator): Compare package sizes and multipacks by weight, volume, or count to find the lowest price per unit.
* [Yeast Converter](https://olivez.in/tool/yeast-converter): Convert active dry, instant, and fresh yeast between grams, teaspoons, tablespoons, packets, and weight ounces.

### Math

* [Birthday Paradox Calculator](https://olivez.in/tool/birthday-paradox-calculator): Calculate the exact probability that at least two people share a birthday and find the group sizes needed for common probability thresholds.
* [Circle Calculator](https://olivez.in/tool/circle-calculator): Calculate a circle's area, circumference, radius, and diameter from any one known measurement.
* [Mean, Median, Mode & Range Calculator](https://olivez.in/tool/mean-median-mode-range-calculator): Calculate mean, median, mode, range, sum, count, minimum, maximum, and exact-value frequencies from a list of numbers.
* [Percentage Calculator](https://olivez.in/tool/percentage-calculator): Calculate X% of Y, reverse percentages, percent change, increases, decreases, difference, discount, markup, tax, tips, and more.
* [Pythagorean Theorem Calculator](https://olivez.in/tool/pythagorean-theorem): Find a missing leg or hypotenuse, verify a right triangle, and see the complete calculation.
* [Roman Numeral Converter](https://olivez.in/tool/roman-numeral-converter): Convert numbers to Roman numerals or Roman numerals to numbers instantly, with validation and a clear conversion breakdown.
* [Scientific Calculator](https://olivez.in/tool/scientific-calculator): Evaluate real-number expressions with trigonometry, logarithms, powers, roots, factorials, percentages, DEG/RAD modes, scientific notation, keyboard input, and Ans.
* [Sphere Calculator: Volume, Surface Area, Radius & Diameter](https://olivez.in/tool/sphere-calculator): Calculate radius, diameter, great-circle circumference, surface area, and volume from any one sphere measurement.
* [Standard Deviation & Variance Calculator](https://olivez.in/tool/standard-deviation-calculator): Calculate sample or population standard deviation, variance, mean, range, sum of squares, and every deviation from the mean.

### Converters

* [Area Converter](https://olivez.in/tool/area-converter): Convert square metres, square feet, acres, hectares, square kilometres, square miles, and other area units.
* [Feet to Inches Converter](https://olivez.in/tool/feet-to-inches-converter): Convert feet to inches or swap the direction to convert inches to feet, with clean results rounded to three decimal places.
* [Force Unit Converter](https://olivez.in/tool/force-unit-converter): Convert newtons, kilonewtons, pound-force, kilogram-force, dynes, and ounce-force instantly in either direction.
* [Length Converter](https://olivez.in/tool/length-converter): Convert millimetres, centimetres, metres, kilometres, inches, feet, yards, miles, and nautical miles.
* [Light-Year Converter](https://olivez.in/tool/light-year-distance-converter): Convert light-years, metres, kilometres, miles, astronomical units, and parsecs in either direction.
* [Pressure Unit Converter](https://olivez.in/tool/pressure-unit-converter): Convert Pa, hPa, kPa, MPa, bar, mbar, psi, atm, Torr, mmHg, and inHg in either direction.
* [Speed Converter](https://olivez.in/tool/speed-converter): Convert kilometres per hour, miles per hour, metres per second, knots, and feet per second in either direction.
* [Temperature Converter](https://olivez.in/tool/temperature-converter): Convert temperature values between Celsius, Fahrenheit, Kelvin, and Rankine with absolute-zero validation.
* [Volume Converter](https://olivez.in/tool/volume-converter): Convert litres, millilitres, cubic units, US liquid units, Imperial units, and clearly labelled cooking cups.
* [Weight Converter](https://olivez.in/tool/weight-mass-converter): Convert milligrams, grams, kilograms, metric tonnes, avoirdupois ounces, pounds, and stone.

### Time

* [Age Calculator](https://olivez.in/tool/age-calculator): Calculate exact age in years, months, and days, total time elapsed, and the date and weekday of the next birthday.
* [Christmas Countdown](https://olivez.in/tool/christmas-countdown-clock): See exactly how long is left until Christmas 2026 with a live countdown showing days, hours, minutes, and seconds in your local time.
* [Days Between Dates Calculator](https://olivez.in/tool/days-between-dates): Count calendar days, Monday-to-Friday weekdays, weekends, and exact weeks between two dates, with optional end-date inclusion.
* [SLA Deadline Calculator](https://olivez.in/tool/deadline-sla-planner): Add elapsed or business hours to a start time, skip custom non-working days and holidays, apply paused time, and export the deadline.

### Lifestyle

* [CO₂ Emissions Calculator](https://olivez.in/tool/co2-emissions-calculator): Estimate CO₂e from travel and household energy using sourced 2026 UK reference factors.
* [French Bulldog Raw Food Calculator](https://olivez.in/tool/french-bulldog-raw-food-calculator): Estimate daily raw-food grams from a French Bulldog's calorie target, food energy density, meal count, and other daily calories.
* [Goldfish Tank Size Calculator](https://olivez.in/tool/goldfish-tank-size-calculator): Estimate aquarium volume for fancy, common, comet, or shubunkin goldfish and compare an existing tank.
* [Raised Bed Soil Volume Calculator](https://olivez.in/tool/raised-bed-soil-volume-calculator): Calculate raised-bed soil volume, bags, bulk cubic yards, fill and settling allowances, mix quantities, and optional delivery weight.

### Developer

* [AI Context Splitter & Redactor](https://olivez.in/tool/ai-context-safety-pack): Scan text for configured sensitive patterns, optionally redact matches, estimate a broad token range, and export ordered context chunks.
* [Favicon & PWA Icon Generator](https://olivez.in/tool/favicon-asset-pack-generator): Generate favicon.ico, PNG favicons, Apple touch icons, regular and maskable PWA icons, a web manifest, HTML links, and deployment notes.
* [Hash Generator & Checksum Checker](https://olivez.in/tool/hash-generator-checker): Generate SHA-256, SHA-384, or SHA-512 locally and compare files or text with a published checksum.
* [iPhone Storage Calculator](https://olivez.in/tool/iphone-storage-calculator): Estimate which iPhone storage capacity fits your current usage, future photos, videos, apps, files, downloads, ownership period, and preferred free-space buffer.
* [IPv4 Subnet Calculator](https://olivez.in/tool/subnet-calculator): Find an IPv4 network address, CIDR block, subnet mask, broadcast boundary, usable range, wildcard mask, and binary breakdown.
* [PX, EM & REM Converter](https://olivez.in/tool/pixel-to-em-converter): Convert px, em, and rem using separate local and root font-size contexts, with CSS-ready output and optional batch conversion.
* [QR Code Generator](https://olivez.in/tool/qr-code-generator): Create free static QR codes for URLs, Wi-Fi, vCards and more with logos, custom styling, PNG/SVG export, and no account, redirect, expiry, watermark, or scan limit.
* [RAID Capacity Calculator](https://olivez.in/tool/raid-capacity-calculator): Calculate usable RAID capacity, parity or mirror overhead, hot-spare reserve, efficiency, binary capacity, and disk-failure tolerance.
* [Secure Password Generator](https://olivez.in/tool/secure-password-generator): Generate 1, 5, or 10 cryptographically random passwords locally with adjustable length, character sets, and ambiguity filtering.

### Devices

* [My Screen Size](https://olivez.in/tool/my-screen-size): Instantly check your browser-reported screen resolution, live viewport, aspect ratio, device pixel ratio, estimated device pixels, color depth, and touch support.
* [Online Ruler](https://olivez.in/tool/online-ruler): Measure small objects on screen in millimetres, centimetres, and inches, with horizontal, vertical, fullscreen, and card-calibrated actual-size modes.
* [White Screen](https://olivez.in/tool/white-screen): Open a fullscreen white or custom color screen for display checks, cleaning, lighting, and tracing, then generate exact-size solid-color PNGs locally.

### Files

* [Color Picker](https://olivez.in/tool/color-picker): Pick colors visually, from a local image or supported screen eyedropper. Inspect source pixels, convert HEX/RGB/HSL/HSV, check WCAG contrast, and export CSS or JSON.
* [Image Compressor](https://olivez.in/tool/image-compressor): Compress JPG/JPEG, PNG, WebP, AVIF, HEIC, and HEIF locally with Target KB, per-image controls, before-and-after comparison, and ZIP downloads.
* [Image Converter](https://olivez.in/tool/image-converter): Convert static JPG, PNG, and WebP images locally with quality and transparency controls, before-and-after comparison, and ZIP downloads.
* [Image Resizer for Online Forms](https://olivez.in/tool/image-resizer-for-online-forms): Check and resize JPG, PNG or WebP images against online-form requirements for file size, pixels, format, aspect ratio and DPI.
* [JPG to PDF Converter](https://olivez.in/tool/jpg-to-pdf): Combine JPG, JPEG and PNG images into one PDF locally with reorder, rotation, page-size and margin controls.
* [JSON to CSV Converter](https://olivez.in/tool/json-to-csv-converter): Convert JSON, nested API responses, JSONL, and NDJSON to CSV or Excel with row-source selection, column preview, and browser-local file processing.
* [Safe CSV Import Doctor](https://olivez.in/tool/safe-csv-import-doctor): Validate UTF-8 CSV structure, detect spreadsheet conversion hazards, and export auditable repairs without coercing identifiers, numbers, or dates.
* [Screenshot Redaction](https://olivez.in/tool/screenshot-privacy-scrubber): Black out sensitive areas of screenshots locally, review the encoded PNG, and download a clean copy without uploading the image.

### Text

* [ASCII Art Generator](https://olivez.in/tool/ascii-art-generator): Convert images or a live camera feed into copyable ASCII art with adjustable detail, character styles, color, PNG and TXT exports.
* [Braille Translator](https://olivez.in/tool/braille-translator): Convert supported English text to uncontracted Unicode Braille or decode the documented Braille subset back to English, then copy the result and inspect its dot patterns.
* [Morse Code Translator](https://olivez.in/tool/morse-code-translator): Translate text to International Morse code or decode written dots and dashes, then copy or play the result without an account.
* [Text to Binary Converter](https://olivez.in/tool/text-to-binary-converter): Convert text, Unicode characters, and emoji into grouped UTF-8 binary and hexadecimal bytes.
* [Typing Tutor](https://olivez.in/tool/typing-tutor): Practise touch typing with adaptive weak-key lessons, honest first-attempt accuracy, mastery-based letter unlocking, and local per-key progress.

### Random

* [Flip a Coin](https://olivez.in/tool/animated-coin-flipper): Flip a coin online for an instant Heads or Tails result. Tap once, or use Settings for multiple flips, custom choices, and simple session stats.
* [List Randomizer](https://olivez.in/tool/list-randomizer): Shuffle names, tasks, topics, numbers, or any line-separated list into a new random order.
* [Lorem Ipsum Generator](https://olivez.in/tool/lorem-ipsum-generator): Generate Lorem Ipsum by exact words, characters, paragraphs, sentences, lists, or UTF-8 bytes, with Text, HTML, and Markdown output.
* [Picker Wheel](https://olivez.in/tool/random-picker-wheel): Add your options, spin the wheel, and let it make a random choice.
* [Random Name Picker](https://olivez.in/tool/random-name-picker): Enter names, spin a full-screen animated wheel, and reveal one random winner with optional sound and celebration effects.
* [Random Number Generator](https://olivez.in/tool/random-number-generator): Generate random integers or fixed-decimal numbers from a custom range, with optional uniqueness and sorting.
* [Random Team Generator](https://olivez.in/tool/random-team-generator): Split a list of names into balanced random teams, pairs, or groups with custom team names, random leaders, CSV export, and shareable links.
* [Random Word Generator](https://olivez.in/tool/random-word-generator): Generate 1 to 50 unique words from a curated English list or paste your own list for custom random picks.
* [Spin the Bottle](https://olivez.in/tool/spin-the-bottle): Spin an animated bottle to choose a random direction, or add 2–12 player names and let the bottle pick one person.
* [Touch Roulette](https://olivez.in/tool/touch-roulette): Place 2–10 fingers on one touchscreen and randomly choose one person for games, turns, chores, and quick group decisions—no app install needed.

### Gaming

* [Dice Roller](https://olivez.in/tool/dice-roller): Roll 1 to 10 animated six-sided dice online for board games, classrooms, probability activities, and quick random results.
* [LEGO® House Calculator](https://olivez.in/tool/lego-house-calculator): Estimate area-equivalent wall and roof pieces for a brick house model, including openings, scale, wall layers, spares, weight, and budget.
* [Minecraft Nether Portal Calculator](https://olivez.in/tool/nether-portal-coordinate-calculator): Convert Minecraft coordinates between the Overworld and Nether with exact positions, whole-block targets, and correct negative-coordinate rounding.
* [Minecraft Pyramid Calculator](https://olivez.in/tool/minecraft-pyramid-block-calculator): Calculate Minecraft pyramid blocks from height, base width, or a block budget. Compare hollow and solid builds, stacks, shulkers, and tiers.
* [Minecraft Stack and Storage Calculator](https://olivez.in/tool/minecraft-stack-calculator): Convert Minecraft items into stacks and storage, convert stacks back into items, or calculate chest, shulker, and inventory capacity.
* [Minecraft Stronghold Triangulation Calculator](https://olivez.in/tool/minecraft-end-portal-finder): Estimate a Java Edition stronghold target by intersecting two Eye of Ender readings from their decimal X, Z, and F3 yaw values.
* [Online Scoreboard](https://olivez.in/tool/online-scoreboard): Free two-team scoreboard for games, sports, quizzes, and activities with rounds or sets, fullscreen, and local autosave.
* [Pictionary Word Generator With Timer](https://olivez.in/tool/pictionary-word-generator): Generate random Pictionary words with a built-in timer, private clue reveal, kids and adult filters, difficulty levels, categories, fullscreen, and no repeats during the session.
* [Reaction Time Test](https://olivez.in/tool/reaction-time-test): Test how quickly you react to a visual signal with a simple browser-based reaction time test.
* [Rust Raid Calculator](https://olivez.in/tool/rust-raid-cost-calculator): Plan a Rust raid and compare C4, rockets, satchels, explosive ammo, sulfur costs, crafting resources, and workbench limits.
* [Stardew Valley Crop Profit Calculator](https://olivez.in/tool/stardew-valley-crop-profit-calculator): Estimate harvests, seed spending, raw crop revenue, jar or keg value, and net profit across a Stardew Valley growing window.
* [Zombie Outbreak Simulator: Can Humanity Survive?](https://olivez.in/tool/zombie-outbreak-simulator): Run a day-by-day humans-versus-zombies simulation with editable strategies, outbreak charts, milestones, and transparent population maths.

### Audio

* [Online Guitar Tuner](https://olivez.in/tool/guitar-tuner): Tune guitar, bass, or ukulele with microphone pitch detection, exact cents, alternate tunings, and custom string targets.
* [Speaker Cleaner](https://olivez.in/tool/speaker-cleaner): Play a cautious 60-second low-frequency cycle for a phone speaker that sounds muffled after water exposure.

## Browse Olivez

* [All Tools](https://olivez.in/tools): Browse the complete current collection of published Olivez tools.

* [Finance Tools](https://olivez.in/tools/finance): Browse 13 finance tools.
* [Business Tools](https://olivez.in/tools/business): Browse 3 business tools.
* [Health Tools](https://olivez.in/tools/health): Browse 3 health tools.
* [Cooking Tools](https://olivez.in/tools/food): Browse 17 cooking tools.
* [Math Tools](https://olivez.in/tools/math): Browse 9 math tools.
* [Converters Tools](https://olivez.in/tools/unit-converters): Browse 10 converters tools.
* [Time Tools](https://olivez.in/tools/dates-time): Browse 4 time tools.
* [Lifestyle Tools](https://olivez.in/tools/home-pets-environment): Browse 4 lifestyle tools.
* [Developer Tools](https://olivez.in/tools/technology): Browse 9 developer tools.
* [Devices Tools](https://olivez.in/tools/devices): Browse 3 devices tools.
* [Files Tools](https://olivez.in/tools/file-conversion): Browse 8 files tools.
* [Text Tools](https://olivez.in/tools/text-codes-languages): Browse 5 text tools.
* [Random Tools](https://olivez.in/tools/random-pickers-generators): Browse 10 random tools.
* [Gaming Tools](https://olivez.in/tools/gaming): Browse 12 gaming tools.
* [Audio Tools](https://olivez.in/tools/music): Browse 2 audio tools.

## Site Pages

* [Blog](https://olivez.in/blog): Educational articles and explainers published by Olivez.
* [About Olivez](https://olivez.in/about): Information about Olivez and the site.
* [Privacy](https://olivez.in/privacy): Information about processing, storage, server requests, and other data-handling behavior.
* [Contact](https://olivez.in/contact): Contact information for Olivez.
* [Terms](https://olivez.in/terms): Terms that apply when using Olivez.
* [Disclaimer](https://olivez.in/disclaimer): General limitations and appropriate-use guidance.